-
Notifications
You must be signed in to change notification settings - Fork 57
/
Copy pathpfctl.c
3368 lines (2966 loc) · 82.3 KB
/
pfctl.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#include <machine/rtems-bsd-user-space.h>
#ifdef __rtems__
#include "rtems-bsd-pfctl-namespace.h"
#define ENABLE_ALTQ
#endif /* __rtems__ */
/* $OpenBSD: pfctl.c,v 1.278 2008/08/31 20:18:17 jmc Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2001 Daniel Hartmeier
* Copyright (c) 2002,2003 Henning Brauer
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifdef __rtems__
#define __need_getopt_newlib
#include <getopt.h>
#include <machine/rtems-bsd-program.h>
#include <machine/rtems-bsd-commands.h>
#endif /* __rtems__ */
#include <sys/cdefs.h>
#define PFIOC_USE_LATEST
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/endian.h>
#include <net/if.h>
#include <netinet/in.h>
#include <net/pfvar.h>
#include <arpa/inet.h>
#include <net/altq/altq.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libpfctl.h>
#include <limits.h>
#include <netdb.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pfctl_parser.h"
#include "pfctl.h"
#ifdef __rtems__
#include "rtems-bsd-pfctl-pfctl-data.h"
#endif /* __rtems__ */
void usage(void);
int pfctl_enable(int, int);
int pfctl_disable(int, int);
int pfctl_clear_stats(struct pfctl_handle *, int);
int pfctl_get_skip_ifaces(void);
int pfctl_check_skip_ifaces(char *);
int pfctl_adjust_skip_ifaces(struct pfctl *);
int pfctl_clear_interface_flags(int, int);
int pfctl_flush_eth_rules(int, int, char *);
int pfctl_flush_rules(int, int, char *);
int pfctl_flush_nat(int, int, char *);
int pfctl_clear_altq(int, int);
int pfctl_clear_src_nodes(int, int);
int pfctl_clear_iface_states(int, const char *, int);
void pfctl_addrprefix(char *, struct pf_addr *);
int pfctl_kill_src_nodes(int, const char *, int);
int pfctl_net_kill_states(int, const char *, int);
int pfctl_gateway_kill_states(int, const char *, int);
int pfctl_label_kill_states(int, const char *, int);
int pfctl_id_kill_states(int, const char *, int);
void pfctl_init_options(struct pfctl *);
int pfctl_load_options(struct pfctl *);
int pfctl_load_limit(struct pfctl *, unsigned int, unsigned int);
int pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int);
int pfctl_load_debug(struct pfctl *, unsigned int);
int pfctl_load_logif(struct pfctl *, char *);
int pfctl_load_hostid(struct pfctl *, u_int32_t);
int pfctl_load_reassembly(struct pfctl *, u_int32_t);
int pfctl_load_syncookies(struct pfctl *, u_int8_t);
int pfctl_get_pool(int, struct pfctl_pool *, u_int32_t, u_int32_t, int,
char *);
void pfctl_print_eth_rule_counters(struct pfctl_eth_rule *, int);
void pfctl_print_rule_counters(struct pfctl_rule *, int);
int pfctl_show_eth_rules(int, char *, int, enum pfctl_show, char *, int, int);
int pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int, int);
int pfctl_show_nat(int, char *, int, char *, int, int);
int pfctl_show_src_nodes(int, int);
int pfctl_show_states(int, const char *, int);
int pfctl_show_status(int, int);
int pfctl_show_running(int);
int pfctl_show_timeouts(int, int);
int pfctl_show_limits(int, int);
void pfctl_debug(int, u_int32_t, int);
int pfctl_test_altqsupport(int, int);
int pfctl_show_anchors(int, int, char *);
int pfctl_show_eth_anchors(int, int, char *);
int pfctl_ruleset_trans(struct pfctl *, char *, struct pfctl_anchor *, bool);
int pfctl_eth_ruleset_trans(struct pfctl *, char *,
struct pfctl_eth_anchor *);
int pfctl_load_eth_ruleset(struct pfctl *, char *,
struct pfctl_eth_ruleset *, int);
int pfctl_load_eth_rule(struct pfctl *, char *, struct pfctl_eth_rule *,
int);
int pfctl_load_ruleset(struct pfctl *, char *,
struct pfctl_ruleset *, int, int);
int pfctl_load_rule(struct pfctl *, char *, struct pfctl_rule *, int);
const char *pfctl_lookup_option(char *, const char * const *);
#ifndef __rtems__
static struct pfctl_anchor_global pf_anchors;
#else /* __rtems__ */
static struct pfctl_anchor_global static_pf_anchors;
#endif /* __rtems__ */
struct pfctl_anchor pf_main_anchor;
struct pfctl_eth_anchor pf_eth_main_anchor;
static struct pfr_buffer skip_b;
static const char *clearopt;
static char *rulesopt;
static const char *showopt;
static const char *debugopt;
static char *anchoropt;
static const char *optiopt = NULL;
static const char *pf_device = PF_DEVICE;
static char *ifaceopt;
static char *tableopt;
static const char *tblcmdopt;
static int src_node_killers;
static char *src_node_kill[2];
static int state_killers;
static char *state_kill[2];
int loadopt;
int altqsupport;
int dev = -1;
struct pfctl_handle *pfh = NULL;
static int first_title = 1;
static int labels = 0;
#define INDENT(d, o) do { \
if (o) { \
int i; \
for (i=0; i < d; i++) \
printf(" "); \
} \
} while (0); \
static const struct {
const char *name;
int index;
} pf_limits[] = {
{ "states", PF_LIMIT_STATES },
{ "src-nodes", PF_LIMIT_SRC_NODES },
{ "frags", PF_LIMIT_FRAGS },
{ "table-entries", PF_LIMIT_TABLE_ENTRIES },
{ NULL, 0 }
};
struct pf_hint {
const char *name;
int timeout;
};
static const struct pf_hint pf_hint_normal[] = {
{ "tcp.first", 2 * 60 },
{ "tcp.opening", 30 },
{ "tcp.established", 24 * 60 * 60 },
{ "tcp.closing", 15 * 60 },
{ "tcp.finwait", 45 },
{ "tcp.closed", 90 },
{ "tcp.tsdiff", 30 },
{ NULL, 0 }
};
static const struct pf_hint pf_hint_satellite[] = {
{ "tcp.first", 3 * 60 },
{ "tcp.opening", 30 + 5 },
{ "tcp.established", 24 * 60 * 60 },
{ "tcp.closing", 15 * 60 + 5 },
{ "tcp.finwait", 45 + 5 },
{ "tcp.closed", 90 + 5 },
{ "tcp.tsdiff", 60 },
{ NULL, 0 }
};
static const struct pf_hint pf_hint_conservative[] = {
{ "tcp.first", 60 * 60 },
{ "tcp.opening", 15 * 60 },
{ "tcp.established", 5 * 24 * 60 * 60 },
{ "tcp.closing", 60 * 60 },
{ "tcp.finwait", 10 * 60 },
{ "tcp.closed", 3 * 60 },
{ "tcp.tsdiff", 60 },
{ NULL, 0 }
};
static const struct pf_hint pf_hint_aggressive[] = {
{ "tcp.first", 30 },
{ "tcp.opening", 5 },
{ "tcp.established", 5 * 60 * 60 },
{ "tcp.closing", 60 },
{ "tcp.finwait", 30 },
{ "tcp.closed", 30 },
{ "tcp.tsdiff", 10 },
{ NULL, 0 }
};
static const struct {
const char *name;
const struct pf_hint *hint;
} pf_hints[] = {
{ "normal", pf_hint_normal },
{ "satellite", pf_hint_satellite },
{ "high-latency", pf_hint_satellite },
{ "conservative", pf_hint_conservative },
{ "aggressive", pf_hint_aggressive },
{ NULL, NULL }
};
static const char * const clearopt_list[] = {
"nat", "queue", "rules", "Sources",
"states", "info", "Tables", "osfp", "all",
"ethernet", NULL
};
static const char * const showopt_list[] = {
"ether", "nat", "queue", "rules", "Anchors", "Sources", "states",
"info", "Interfaces", "labels", "timeouts", "memory", "Tables",
"osfp", "Running", "all", "creatorids", NULL
};
static const char * const tblcmdopt_list[] = {
"kill", "flush", "add", "delete", "load", "replace", "show",
"test", "zero", "expire", NULL
};
static const char * const debugopt_list[] = {
"none", "urgent", "misc", "loud", NULL
};
static const char * const optiopt_list[] = {
"none", "basic", "profile", NULL
};
void
usage(void)
{
#ifndef __rtems__
extern char *__progname;
#else /* __rtems__ */
#define __progname "pfctl"
#endif /* __rtems__ */
fprintf(stderr,
"usage: %s [-AdeghMmNnOPqRrvz] [-a anchor] [-D macro=value] [-F modifier]\n"
"\t[-f file] [-i interface] [-K host | network]\n"
"\t[-k host | network | gateway | label | id] [-o level] [-p device]\n"
"\t[-s modifier] [-t table -T command [address ...]] [-x level]\n",
__progname);
exit(1);
}
/*
* Cache protocol number to name translations.
*
* Translation is performed a lot e.g., when dumping states and
* getprotobynumber is incredibly expensive.
*
* Note from the getprotobynumber(3) manpage:
* <quote>
* These functions use a thread-specific data space; if the data is needed
* for future use, it should be copied before any subsequent calls overwrite
* it. Only the Internet protocols are currently understood.
* </quote>
*
* Consequently we only cache the name and strdup it for safety.
*
* At the time of writing this comment the last entry in /etc/protocols is:
* divert 258 DIVERT # Divert pseudo-protocol [non IANA]
*/
const char *
pfctl_proto2name(int proto)
{
static const char *pfctl_proto_cache[259];
struct protoent *p;
if (proto >= nitems(pfctl_proto_cache)) {
p = getprotobynumber(proto);
if (p == NULL) {
return (NULL);
}
return (p->p_name);
}
if (pfctl_proto_cache[proto] == NULL) {
p = getprotobynumber(proto);
if (p == NULL) {
return (NULL);
}
pfctl_proto_cache[proto] = strdup(p->p_name);
}
return (pfctl_proto_cache[proto]);
}
int
pfctl_enable(int dev, int opts)
{
int ret;
if ((ret = pfctl_startstop(pfh, 1)) != 0) {
if (ret == EEXIST)
errx(1, "pf already enabled");
else if (ret == ESRCH)
errx(1, "pfil registeration failed");
else
errc(1, ret, "DIOCSTART");
}
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "pf enabled\n");
if (altqsupport && ioctl(dev, DIOCSTARTALTQ))
if (errno != EEXIST)
err(1, "DIOCSTARTALTQ");
return (0);
}
int
pfctl_disable(int dev, int opts)
{
int ret;
if ((ret = pfctl_startstop(pfh, 0)) != 0) {
if (ret == ENOENT)
errx(1, "pf not enabled");
else
errc(1, ret, "DIOCSTOP");
}
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "pf disabled\n");
if (altqsupport && ioctl(dev, DIOCSTOPALTQ))
if (errno != ENOENT)
err(1, "DIOCSTOPALTQ");
return (0);
}
int
pfctl_clear_stats(struct pfctl_handle *h, int opts)
{
int ret;
if ((ret = pfctl_clear_status(h)) != 0)
errc(1, ret, "DIOCCLRSTATUS");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "pf: statistics cleared\n");
return (0);
}
int
pfctl_get_skip_ifaces(void)
{
bzero(&skip_b, sizeof(skip_b));
skip_b.pfrb_type = PFRB_IFACES;
for (;;) {
pfr_buf_grow(&skip_b, skip_b.pfrb_size);
skip_b.pfrb_size = skip_b.pfrb_msize;
if (pfi_get_ifaces(NULL, skip_b.pfrb_caddr, &skip_b.pfrb_size))
err(1, "pfi_get_ifaces");
if (skip_b.pfrb_size <= skip_b.pfrb_msize)
break;
}
return (0);
}
int
pfctl_check_skip_ifaces(char *ifname)
{
struct pfi_kif *p;
struct node_host *h = NULL, *n = NULL;
PFRB_FOREACH(p, &skip_b) {
if (!strcmp(ifname, p->pfik_name) &&
(p->pfik_flags & PFI_IFLAG_SKIP))
p->pfik_flags &= ~PFI_IFLAG_SKIP;
if (!strcmp(ifname, p->pfik_name) && p->pfik_group != NULL) {
if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
continue;
for (n = h; n != NULL; n = n->next) {
if (strncmp(p->pfik_name, ifname, IFNAMSIZ))
continue;
p->pfik_flags &= ~PFI_IFLAG_SKIP;
}
}
}
return (0);
}
int
pfctl_adjust_skip_ifaces(struct pfctl *pf)
{
struct pfi_kif *p, *pp;
struct node_host *h = NULL, *n = NULL;
PFRB_FOREACH(p, &skip_b) {
if (p->pfik_group == NULL || !(p->pfik_flags & PFI_IFLAG_SKIP))
continue;
pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
continue;
for (n = h; n != NULL; n = n->next)
PFRB_FOREACH(pp, &skip_b) {
if (strncmp(pp->pfik_name, n->ifname, IFNAMSIZ))
continue;
if (!(pp->pfik_flags & PFI_IFLAG_SKIP))
pfctl_set_interface_flags(pf,
pp->pfik_name, PFI_IFLAG_SKIP, 1);
if (pp->pfik_flags & PFI_IFLAG_SKIP)
pp->pfik_flags &= ~PFI_IFLAG_SKIP;
}
}
PFRB_FOREACH(p, &skip_b) {
if (! (p->pfik_flags & PFI_IFLAG_SKIP))
continue;
pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
}
return (0);
}
int
pfctl_clear_interface_flags(int dev, int opts)
{
struct pfioc_iface pi;
if ((opts & PF_OPT_NOACTION) == 0) {
bzero(&pi, sizeof(pi));
pi.pfiio_flags = PFI_IFLAG_SKIP;
if (ioctl(dev, DIOCCLRIFFLAG, &pi))
err(1, "DIOCCLRIFFLAG");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "pf: interface flags reset\n");
}
return (0);
}
int
pfctl_flush_eth_rules(int dev, int opts, char *anchorname)
{
int ret;
ret = pfctl_clear_eth_rules(dev, anchorname);
if (ret != 0)
err(1, "pfctl_clear_eth_rules");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "Ethernet rules cleared\n");
return (ret);
}
int
pfctl_flush_rules(int dev, int opts, char *anchorname)
{
int ret;
ret = pfctl_clear_rules(dev, anchorname);
if (ret != 0)
err(1, "pfctl_clear_rules");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "rules cleared\n");
return (0);
}
int
pfctl_flush_nat(int dev, int opts, char *anchorname)
{
int ret;
ret = pfctl_clear_nat(dev, anchorname);
if (ret != 0)
err(1, "pfctl_clear_nat");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "nat cleared\n");
return (0);
}
int
pfctl_clear_altq(int dev, int opts)
{
struct pfr_buffer t;
if (!altqsupport)
return (-1);
memset(&t, 0, sizeof(t));
t.pfrb_type = PFRB_TRANS;
if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") ||
pfctl_trans(dev, &t, DIOCXBEGIN, 0) ||
pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
err(1, "pfctl_clear_altq");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "altq cleared\n");
return (0);
}
int
pfctl_clear_src_nodes(int dev, int opts)
{
if (ioctl(dev, DIOCCLRSRCNODES))
err(1, "DIOCCLRSRCNODES");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "source tracking entries cleared\n");
return (0);
}
int
pfctl_clear_iface_states(int dev, const char *iface, int opts)
{
struct pfctl_kill kill;
unsigned int killed;
int ret;
memset(&kill, 0, sizeof(kill));
if (iface != NULL && strlcpy(kill.ifname, iface,
sizeof(kill.ifname)) >= sizeof(kill.ifname))
errx(1, "invalid interface: %s", iface);
if (opts & PF_OPT_KILLMATCH)
kill.kill_match = true;
if ((ret = pfctl_clear_states_h(pfh, &kill, &killed)) != 0)
errc(1, ret, "DIOCCLRSTATES");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "%d states cleared\n", killed);
return (0);
}
void
pfctl_addrprefix(char *addr, struct pf_addr *mask)
{
char *p;
const char *errstr;
int prefix, ret_ga, q, r;
struct addrinfo hints, *res;
if ((p = strchr(addr, '/')) == NULL)
return;
*p++ = '\0';
prefix = strtonum(p, 0, 128, &errstr);
if (errstr)
errx(1, "prefix is %s: %s", errstr, p);
bzero(&hints, sizeof(hints));
/* prefix only with numeric addresses */
hints.ai_flags |= AI_NUMERICHOST;
if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) {
errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
/* NOTREACHED */
}
if (res->ai_family == AF_INET && prefix > 32)
errx(1, "prefix too long for AF_INET");
else if (res->ai_family == AF_INET6 && prefix > 128)
errx(1, "prefix too long for AF_INET6");
q = prefix >> 3;
r = prefix & 7;
switch (res->ai_family) {
case AF_INET:
bzero(&mask->v4, sizeof(mask->v4));
mask->v4.s_addr = htonl((u_int32_t)
(0xffffffffffULL << (32 - prefix)));
break;
case AF_INET6:
bzero(&mask->v6, sizeof(mask->v6));
if (q > 0)
memset((void *)&mask->v6, 0xff, q);
if (r > 0)
*((u_char *)&mask->v6 + q) =
(0xff00 >> r) & 0xff;
break;
}
freeaddrinfo(res);
}
int
pfctl_kill_src_nodes(int dev, const char *iface, int opts)
{
struct pfioc_src_node_kill psnk;
struct addrinfo *res[2], *resp[2];
struct sockaddr last_src, last_dst;
int killed, sources, dests;
int ret_ga;
killed = sources = dests = 0;
memset(&psnk, 0, sizeof(psnk));
memset(&psnk.psnk_src.addr.v.a.mask, 0xff,
sizeof(psnk.psnk_src.addr.v.a.mask));
memset(&last_src, 0xff, sizeof(last_src));
memset(&last_dst, 0xff, sizeof(last_dst));
pfctl_addrprefix(src_node_kill[0], &psnk.psnk_src.addr.v.a.mask);
if ((ret_ga = getaddrinfo(src_node_kill[0], NULL, NULL, &res[0]))) {
errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
/* NOTREACHED */
}
for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
if (resp[0]->ai_addr == NULL)
continue;
/* We get lots of duplicates. Catch the easy ones */
if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
continue;
last_src = *(struct sockaddr *)resp[0]->ai_addr;
psnk.psnk_af = resp[0]->ai_family;
sources++;
if (psnk.psnk_af == AF_INET)
psnk.psnk_src.addr.v.a.addr.v4 =
((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr;
else if (psnk.psnk_af == AF_INET6)
psnk.psnk_src.addr.v.a.addr.v6 =
((struct sockaddr_in6 *)resp[0]->ai_addr)->
sin6_addr;
else
errx(1, "Unknown address family %d", psnk.psnk_af);
if (src_node_killers > 1) {
dests = 0;
memset(&psnk.psnk_dst.addr.v.a.mask, 0xff,
sizeof(psnk.psnk_dst.addr.v.a.mask));
memset(&last_dst, 0xff, sizeof(last_dst));
pfctl_addrprefix(src_node_kill[1],
&psnk.psnk_dst.addr.v.a.mask);
if ((ret_ga = getaddrinfo(src_node_kill[1], NULL, NULL,
&res[1]))) {
errx(1, "getaddrinfo: %s",
gai_strerror(ret_ga));
/* NOTREACHED */
}
for (resp[1] = res[1]; resp[1];
resp[1] = resp[1]->ai_next) {
if (resp[1]->ai_addr == NULL)
continue;
if (psnk.psnk_af != resp[1]->ai_family)
continue;
if (memcmp(&last_dst, resp[1]->ai_addr,
sizeof(last_dst)) == 0)
continue;
last_dst = *(struct sockaddr *)resp[1]->ai_addr;
dests++;
if (psnk.psnk_af == AF_INET)
psnk.psnk_dst.addr.v.a.addr.v4 =
((struct sockaddr_in *)resp[1]->
ai_addr)->sin_addr;
else if (psnk.psnk_af == AF_INET6)
psnk.psnk_dst.addr.v.a.addr.v6 =
((struct sockaddr_in6 *)resp[1]->
ai_addr)->sin6_addr;
else
errx(1, "Unknown address family %d",
psnk.psnk_af);
if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
err(1, "DIOCKILLSRCNODES");
killed += psnk.psnk_killed;
}
freeaddrinfo(res[1]);
} else {
if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
err(1, "DIOCKILLSRCNODES");
killed += psnk.psnk_killed;
}
}
freeaddrinfo(res[0]);
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "killed %d src nodes from %d sources and %d "
"destinations\n", killed, sources, dests);
return (0);
}
int
pfctl_net_kill_states(int dev, const char *iface, int opts)
{
struct pfctl_kill kill;
struct addrinfo *res[2], *resp[2];
struct sockaddr last_src, last_dst;
unsigned int newkilled;
int killed, sources, dests;
int ret_ga, ret;
killed = sources = dests = 0;
memset(&kill, 0, sizeof(kill));
memset(&kill.src.addr.v.a.mask, 0xff,
sizeof(kill.src.addr.v.a.mask));
memset(&last_src, 0xff, sizeof(last_src));
memset(&last_dst, 0xff, sizeof(last_dst));
if (iface != NULL && strlcpy(kill.ifname, iface,
sizeof(kill.ifname)) >= sizeof(kill.ifname))
errx(1, "invalid interface: %s", iface);
if (state_killers == 2 && (strcmp(state_kill[0], "nat") == 0)) {
kill.nat = true;
state_kill[0] = state_kill[1];
state_killers = 1;
}
pfctl_addrprefix(state_kill[0], &kill.src.addr.v.a.mask);
if (opts & PF_OPT_KILLMATCH)
kill.kill_match = true;
if ((ret_ga = getaddrinfo(state_kill[0], NULL, NULL, &res[0]))) {
errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
/* NOTREACHED */
}
for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
if (resp[0]->ai_addr == NULL)
continue;
/* We get lots of duplicates. Catch the easy ones */
if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
continue;
last_src = *(struct sockaddr *)resp[0]->ai_addr;
kill.af = resp[0]->ai_family;
sources++;
if (kill.af == AF_INET)
kill.src.addr.v.a.addr.v4 =
((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr;
else if (kill.af == AF_INET6)
kill.src.addr.v.a.addr.v6 =
((struct sockaddr_in6 *)resp[0]->ai_addr)->
sin6_addr;
else
errx(1, "Unknown address family %d", kill.af);
if (state_killers > 1) {
dests = 0;
memset(&kill.dst.addr.v.a.mask, 0xff,
sizeof(kill.dst.addr.v.a.mask));
memset(&last_dst, 0xff, sizeof(last_dst));
pfctl_addrprefix(state_kill[1],
&kill.dst.addr.v.a.mask);
if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL,
&res[1]))) {
errx(1, "getaddrinfo: %s",
gai_strerror(ret_ga));
/* NOTREACHED */
}
for (resp[1] = res[1]; resp[1];
resp[1] = resp[1]->ai_next) {
if (resp[1]->ai_addr == NULL)
continue;
if (kill.af != resp[1]->ai_family)
continue;
if (memcmp(&last_dst, resp[1]->ai_addr,
sizeof(last_dst)) == 0)
continue;
last_dst = *(struct sockaddr *)resp[1]->ai_addr;
dests++;
if (kill.af == AF_INET)
kill.dst.addr.v.a.addr.v4 =
((struct sockaddr_in *)resp[1]->
ai_addr)->sin_addr;
else if (kill.af == AF_INET6)
kill.dst.addr.v.a.addr.v6 =
((struct sockaddr_in6 *)resp[1]->
ai_addr)->sin6_addr;
else
errx(1, "Unknown address family %d",
kill.af);
if ((ret = pfctl_kill_states_h(pfh, &kill, &newkilled)) != 0)
errc(1, ret, "DIOCKILLSTATES");
killed += newkilled;
}
freeaddrinfo(res[1]);
} else {
if ((ret = pfctl_kill_states_h(pfh, &kill, &newkilled)) != 0)
errc(1, ret, "DIOCKILLSTATES");
killed += newkilled;
}
}
freeaddrinfo(res[0]);
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "killed %d states from %d sources and %d "
"destinations\n", killed, sources, dests);
return (0);
}
int
pfctl_gateway_kill_states(int dev, const char *iface, int opts)
{
struct pfctl_kill kill;
struct addrinfo *res, *resp;
struct sockaddr last_src;
unsigned int newkilled;
int killed = 0;
int ret_ga;
if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
warnx("no gateway specified");
usage();
}
memset(&kill, 0, sizeof(kill));
memset(&kill.rt_addr.addr.v.a.mask, 0xff,
sizeof(kill.rt_addr.addr.v.a.mask));
memset(&last_src, 0xff, sizeof(last_src));
if (iface != NULL && strlcpy(kill.ifname, iface,
sizeof(kill.ifname)) >= sizeof(kill.ifname))
errx(1, "invalid interface: %s", iface);
if (opts & PF_OPT_KILLMATCH)
kill.kill_match = true;
pfctl_addrprefix(state_kill[1], &kill.rt_addr.addr.v.a.mask);
if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL, &res))) {
errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
/* NOTREACHED */
}
for (resp = res; resp; resp = resp->ai_next) {
if (resp->ai_addr == NULL)
continue;
/* We get lots of duplicates. Catch the easy ones */
if (memcmp(&last_src, resp->ai_addr, sizeof(last_src)) == 0)
continue;
last_src = *(struct sockaddr *)resp->ai_addr;
kill.af = resp->ai_family;
if (kill.af == AF_INET)
kill.rt_addr.addr.v.a.addr.v4 =
((struct sockaddr_in *)resp->ai_addr)->sin_addr;
else if (kill.af == AF_INET6)
kill.rt_addr.addr.v.a.addr.v6 =
((struct sockaddr_in6 *)resp->ai_addr)->
sin6_addr;
else
errx(1, "Unknown address family %d", kill.af);
if (pfctl_kill_states_h(pfh, &kill, &newkilled))
err(1, "DIOCKILLSTATES");
killed += newkilled;
}
freeaddrinfo(res);
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "killed %d states\n", killed);
return (0);
}
int
pfctl_label_kill_states(int dev, const char *iface, int opts)
{
struct pfctl_kill kill;
unsigned int killed;
int ret;
if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
warnx("no label specified");
usage();
}
memset(&kill, 0, sizeof(kill));
if (iface != NULL && strlcpy(kill.ifname, iface,
sizeof(kill.ifname)) >= sizeof(kill.ifname))
errx(1, "invalid interface: %s", iface);
if (opts & PF_OPT_KILLMATCH)
kill.kill_match = true;
if (strlcpy(kill.label, state_kill[1], sizeof(kill.label)) >=
sizeof(kill.label))
errx(1, "label too long: %s", state_kill[1]);
if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
errc(1, ret, "DIOCKILLSTATES");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "killed %d states\n", killed);
return (0);
}
int
pfctl_id_kill_states(int dev, const char *iface, int opts)
{
struct pfctl_kill kill;
unsigned int killed;
int ret;
if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
warnx("no id specified");
usage();
}
memset(&kill, 0, sizeof(kill));
if (opts & PF_OPT_KILLMATCH)
kill.kill_match = true;
if ((sscanf(state_kill[1], "%jx/%x",
&kill.cmp.id, &kill.cmp.creatorid)) == 2) {
}
else if ((sscanf(state_kill[1], "%jx", &kill.cmp.id)) == 1) {
kill.cmp.creatorid = 0;
} else {
warnx("wrong id format specified");
usage();
}
if (kill.cmp.id == 0) {
warnx("cannot kill id 0");
usage();
}
if ((ret = pfctl_kill_states_h(pfh, &kill, &killed)) != 0)
errc(1, ret, "DIOCKILLSTATES");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "killed %d states\n", killed);
return (0);
}
int
pfctl_get_pool(int dev, struct pfctl_pool *pool, u_int32_t nr,
u_int32_t ticket, int r_action, char *anchorname)
{
struct pfioc_pooladdr pp;
struct pf_pooladdr *pa;
u_int32_t pnr, mpnr;
int ret;
memset(&pp, 0, sizeof(pp));
if ((ret = pfctl_get_addrs(pfh, ticket, nr, r_action, anchorname, &mpnr)) != 0) {
warnc(ret, "DIOCGETADDRS");
return (-1);
}
TAILQ_INIT(&pool->list);
for (pnr = 0; pnr < mpnr; ++pnr) {
if ((ret = pfctl_get_addr(pfh, ticket, nr, r_action, anchorname, pnr, &pp)) != 0) {
warnc(ret, "DIOCGETADDR");
return (-1);